[issue27081] Cannot capture sys.stderr output from an uncaught exception in a multiprocessing Process using a multiprocessing Queue

[Davin Potts]

Davin Potts added the comment:

I took the example snippet and cleaned things up a bit, adding some crude timestamping and commentary.  (Attached)

In the example, when the Process finally dies, a lot of information has been put onto the Queue but it hasn't necessarily had enough time to be synced to the parent process so it may be only a truncated subset of the data that remains available/visible/retrievable on the parent.  How much data gets synced to the parent depends on many factors and should even vary from one run to another.

That is to say that a multiprocessing.Queue is not going to hold up a dying process to finish communicating data to other processes.

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Added file: http://bugs.python.org/file43613/issue27081.py

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